Vise with push device

Abstract

A vise includes a body and a fixed jaw connected to the body, a movable jaw, a driving unit, and a push unit. The body has a guide member and the driving unit has a threaded rod which is co-axially connected to the movable jaw. A locking member is threadedly mounted to the threaded rod. The push device has a slide mounted to the guide member, a joint member connected to the slide and a cylinder connected to the slide. The slide has a groove and the joint member has a pivot which is engaged with the groove. When activating the cylinder, the movable jaw is moved toward to or away from the fixed jaw by the joint member and the locking member, and the clamping force is magnified.

1 . A vise comprising:
 a body extending along a longitudinal direction and having a first end and a second end which is located in opposite and along the longitudinal direction to the first end, the second end having a guide member located along the longitudinal direction;   a fixed jaw fixed to the first end;   a movable jaw connected to the body and located corresponding to the fixed jaw;   a driving unit having a threaded rod which is co-axially connected to the movable jaw, a locking member threadedly mounted to the threaded rod, and   a push device having a slide which is located in the guide member, a joint member connected to the slide and a cylinder connected to the slide, the slide having a groove and the joint member having a pivot which is engaged with the groove, a first link pivotably connected the pivot and the body, a second link pivotably connected between the pivot and the locking member, the cylinder driving the slide to move along the longitudinal direction.   
     
     
         2 . The vise as claimed in  claim 1 , wherein the body has a top board and multiple end boards extend downward from the top board, a space is defined between the top board and the multiple end boards, the top board has a slot through which the locking member extends and reaches the space, the cylinder is located in the space. 
     
     
         3 . The vise as claimed in  claim 2 , wherein the guide member of the body is a hollow member and has a guide hole which extends along the longitudinal direction, the slide is engaged with the guide hole. 
     
     
         4 . The vise as claimed in  claim 3 , wherein the slide of the push device has a first side and a second side which is located in opposite to the first side along the longitudinal direction, the first side is connected with the cylinder, the groove extends from the first side to the second side, the grove has a top dead point located corresponding to the first side and a bottom dead point located corresponding to the second side, an inclined section is located between the top and bottom dead points. 
     
     
         5 . The vise as claimed in  claim 4 , wherein the groove of the slide of the push device has a first buffering section and a second buffering section, the first buffering section is connected between the top dead point and the inclined section, the second buffering section is connected between the bottom dead point and the inclined section.